Which hooks run before postbit is parsed?

[SDB]

Hi

This is driving me crazy.

I have some serialized data in the datastore. I can get the data out of the database without a problem.

What I can't see to do is reliably get it out and have it available in the postbit template.

In the hook I have the code :

$vbulletin->mydata = unserialize($vbulletin->mydata);

in the postbit template I have the code :

{$vbulletin->mydata['myfield']}

This returns an empty string / nothing in the postbit template.

If i add that code to the footer template, it works fine.

I assume this is because the postbit template is parsed before the hooks I've tried run?

Any help would be really appreciated as to

a) which hooks run before the postbit templates are parsed to build the thread?
b) am I just doing something fundamentally wrong?

Thanks in advance

Simon